Cleaning device



E. TEEEELL.

. CLEANING nEvlce. APPLICATION FILED OCT. 8.191.2-RENEWED OCT- 4.19l8.

' Patented May 13, 1919.

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EDWARD A. TEEPELL, 0F GERMANTOWN, Il?ENNSYIIVJAITIA.`

CLEANING DEVICE.

Specification of Letters Patent.

` Patented May 13, 1919.

Application led October 8, 1912, Serial No. 724,548. Renewed October 4, 1918. Serial No. 256,914.

To all whom t may concern:

Be it known that I, EDWARD A. TEEPELL, residing at Germantown, county of Philadelphia, State of Pennsylvania, have in- Fig. 2 is a fragmentary view in part sec` tion of an engine cylinder and piston with my cleaning device shown in elevation.

Similar numerals refer to similar parts throughout the several views.

A suitable flexible lfabric is formed by a series of interengagin rings or links 3, arranged to form a sur ace having a substantially circular margin or periphery. This ring consists preferably of a helical spring 4, having its opposite ends secured together. A resilient ring corresponding to the circular periphery of the fabric is thus provided. A number of the marginal rings or links 3 are engaged at separated points with a portion 5 or portions 6 of the extension of said helical spring. The purposeof the ring 4 is to maintain the fabric formed of the rings or links 3 in the iiat or stretched out position, since the tendency of the ring 4 is always to maintain a circular shape.

` When this swab or fabric with its marginal or surrounding ring or selvage 4 is used for cleaning the cylinder of an internal combustion engine it is preferably made to fit approximately the top of the piston of such cylinder, so that the margin 4 will engage the sidesof the cylinder as the piston reciprocates. The tension of the ring 4 prevents the links or rings 4 of the fabric from bunching, and thus prevents the fabric from balling or forming into a heap, which would occupy more space than is left between the top of the piston and the cylinder head. That is to say, the fabric is always held out approximately flat, so that, as it is thrown between the top of the piston and the cylin der head, it always maintains its flat position or approximately such position and eiiciently cleans the carbon from the interior surfaces of the cylinder and the top of the piston, without danger of injury thereto.

1. A cleaning device adapted for use within an engine cylinder, comprising a flexible metallic body portion having a circular contour when fiat and resilient means for normally maintaining said circular contour.

2. A cleaning device for cylinders of internal combustion engines comprising a plurality of interconnecting metallic links forming a fabric having a circular contour when fiat, corresponding to the interior cross-section of the cylinder, and an annular spring engaged by marginal links of the fabric and adapted to maintain the fabric normally flat under tension of the spring.

3. A cleaning device for engine cylinders and pistons comprising a plurality of interconnecting metallic links forming a flexible fabric having an approximately circular margin when flat, a helical spring engaging the marginal links of the fabric to maintain the fabric normally fiat, said device adapted to lie upon the top of the piston and to be reciprocated between the piston and the cylinder head for the purpose specified.

EDWARD A. TEEPELL.

Witnesses:

MAE HorMANN, HOWARD S. 0km.

Gopiel of this patent may be obtained for ive centi elch, by addressing the Gommissioner o! Patents,

Washington, I). 0." 

